diff --git a/lib/Prefs.pm b/lib/Prefs.pm
index 95cf815..f69c446 100644
--- a/lib/Prefs.pm
+++ b/lib/Prefs.pm
@@ -198,7 +198,7 @@ sub custom_prefs {
     for my $p ( qw{GUICheck TruncateLog DupeDB } ) {
         # on by default
         if ( !exists $pkg{ $p } ) {
-            $pkg{ $p } = 1;
+            $pkg{ $p } = 0;
         }
     }
 
